Bug 182205 – Cairo: Bold font with ghosting(?)

• Component: Platform
• Status: RESOLVED DUPLICATE

[高向党]

使用cairo图形库编译，打开网页加粗字体有重影，系统为win10，屏幕分辨率（1920*108)，
原因描述：
Source\WebCore\platform\graphics\cairo\CairoOperations.cpp文件中，调用drawGlyphsToContext函数中
if (syntheticBoldOffset) {			
        cairo_translate(context, 1, 0);
        cairo_show_glyphs(context, glyphs.data(), glyphs.size());
        cairo_set_matrix(context, &originalTransform);
}

其中调用cairo_translate函数的第二个参数直接使用syntheticBoldOffset，没有跟据系统的分辨率和缩放比例进行调整

建议修改方式：
 if (syntheticBoldOffset) {	
        double inverseScaleFactor = syntheticBoldOffset / deviceScaleFactorForWindow(0);	
        cairo_translate(context, inverseScaleFactor, 0);
        cairo_show_glyphs(context, glyphs.data(), glyphs.size());
        cairo_set_matrix(context, &originalTransform);
    }

[Fujii Hironori]

Can you take a screenshot of this bug?
Same with Bug 182093?

[Fujii Hironori]

Please reopen if Bug 182093 doesn't solve your problem.

*** This bug has been marked as a duplicate of bug 182093 ***